Movable lamp support



Maly 6, 1930. N. G. CARLSON 1,757,617

MOVABLE LAMP SUPPORT Fil e d March 20, 1928 qrra 51. I

- a movable lamp support, and has for one'of its principal objects, the provision of means Patented May 6, 1930 NILS G. CARLSON, or sou'r ris aiim, I vnIAivAi,

MOVABLE LAMP "st r-roar Application filled March 2 0, 1 928. 6. Serial.No ."23 ,'1 88. r 1

This invention relates to improvements in for optionally positioning an electric lamp, so as to illuminate a desired portion of a room, Workshop, foundry floor or the like.

One of the most important and most difiiinasmuch as the work cannot be moved to permit the rays of the light to fall on another desired portion of thework, the molder must do his work under very trying conditions, In an iron foundry, this need of light is felt the keenest, as the moldingsand used is black and good illumination is most essential.

One of the important objects of this invention is to provide a lamp support which is movably moimted on an overhead railor track and which may be positioned over any 7 portion of a foundry or shop;floor, or the using a number of lamps'to illuminatevarious portions of a large piece'of work, and also rendering every portion of the work vis ible from any angle.

Another difficulty met with in illuminating shops and foundries is the frequency With which the lamps'and their accompanying reflectors must be cleaned. This situation; is particularly troublesome in grain mills, ,ce ment mills, flour'mills, and foundries, and in fact, any place where finely divided particles. of solid matter are apt to accumulate upon 1 the lamps and reflectors. This condition necessitates a weekly or even a daily cleaning of the lamps, and with theordinary fixtures this presents a considerable task,asthe lightsare'usually' positioned in such a place that a ladder must be used to reach each-individual lamp. 1

' Another important object of this invention purpose. The rails up'on'i 'jvvhichithe lamp This is especially is'the provision of means for pemo ifig the.

lampfrom its pesiugn'ovee theiwvorking floor to .aporaon theshop, .which can be used, as inthe case of cleaning thelamps, forthat supports ride can; all terminate, at balcony or the like to'which each light-in its turn may 'bepulled and there cleaned. It is' obvious that theilabo'rious task of from'light' tolight on the working 'fioorjand ascending and descendinga ladder at each lightis there- '6 fore eliminated. i H

Other and further important objects of the invention will be, apparent from the "discl'o-I sures in the accompanyingdrawings and following specification. v

The invention, in a preferred I form, is ;il'

lustr'at-ed in the drawings and hereinafter more fully described;

In'th'e drawings:

ure 1} illustrat' Figure 2 isia detailend view of the'lamp supporting trolley. v

a E'gure 3 ma sectlonal view'takenonthe line 3 -3 of Figure 2.

Figur is an entire, sectional view taken on the linel j4;fo fFigure 3.1

like, thereby eliminating the necessity of :lll'Fiigiuvre 5513M! end View Partially-i1? d l of the lead supporting trolley. K a ,e As shown in'the drawingsf V Thereferencejnumeral 10 indicates' gener distribute the light from the lamp; Elec-l trical' connection is made to the lamp 10 by, means of one end of a duplexfle'ad 16,. the

other-[end of Which is connectedto somefre J mote source 'ofelectric'current.

' An overhead cable, ra1l or intermediate theicurrent source and member 20, and; supported by the rail1 8 is a' conductor guide. best shown infigure-tilthe guide V is a side elevation of, device, s t e ra l isa e 9 he.

trackjls runs I along theceiling of the portion of thework shop to be lighted, and 'suported thereon isI a' lamp supporting trolley; 20. Z Positioned i c n uc edini wckp r sa@ s p o mg -member 22 and a ,trolleyjvheel 24. In

- order to simplify the mounting and removing of the guide from the rail 18 the member 22 is constructed of some resilient metal, such as steel or the like, andgbent double upon itself,'the ends beinginwardly disposed and adapted to form a bearing for the wheel 24.

It can readily be seen that to' remove the cable 'guide from the track 18, the juxtaposed ends of the guide 22 need merely be sprung apart The lamp supporting member ZQcomprises tWo companion portions 2 6and 28 fastened together by means of rivets or-thelike A trolley Wheel32 embraced between the up- ;per ends ofthe members-'26, and 28ds adapted "wiide n't e mil .8- In rder ha th menwo as a Wliole'iijnay bei'eadily' demo'unt;

from: the rail 1:8, the trolley Wheel jf32 b r move by mere yun qr w ngf iocbw h i q ii l 'endbeari g 3 :Tfie duplex 9nd. ou 16" rawn rom a remo eutl t th u h. he vg i g -Z: nd i' ldugh aI bP I -g 6 the y f h upiport 20, Anothg'l CP'ening 3'8: atjthe bottom of thesuppoijt go, intersectsthe opening'36 at right angles andthe'ficonductor passes therethrough to the socket 12. If desired, a

' switchO maybe interposedinthecircuitof ll yc diic mf rmitting h W k 1 t rn the. igh 1E and 10 t will; This" switch-extension may also beused'a's aineans rm v ngthebody 2 a g't e rai 'It isapparentfthatherein is-provided'ajdevice which is ideally adapted for use ina fac tory, foundry or mill. 'Betterillumi'nation w ll. re u tand oneo amp se no jnn n w t i h v c W i P r Qrm. he f nc ion of several lamps used with the ordinary stationamaware that many changesf may be made and numerou deta s. o c'on t u qnvva l throughout a Wide range without departing therefore do not pnrposelimiting thepatent h he iw, ail, t l y single, amp. f om th trolleyranted here n otherwise thaw e e it t by the rior art-j I claim as myjnyention i f 5 A moyable-lal'fip'suppdiifi 1116 her. iQYfibly positioned on the rail-, and'mans for suspend-I member, said means comprising a'pair of; juxtaposed elements forming'thetrolley embenan elect ic duplex lea also depending "fromthe trolley,

' membe a. manual y peitated depend'ing heduplexieadgifihe said; i

switch at the end of trq leyomember'having' two intersecting open- -t ngsadap edto house h i cj iip xtl a y tiv s. permanently onn ing" heo, le: r-

meats, jon-e po'rtion of said duplex lead supportingthe lamp andtheother portion sup-o porting said manuallyoperated switch, said; lagts m df portion" also compris'ing meansrq r he-p nfiileles of, this inventiomlandl 7 

